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Embryonic Stem Cells

Embryonic Stem Cells

Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...

Embryonic Stem Cells

Embryonic Stem Cells

Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.

Stem Cell Culture

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...

Stem Cell Therapy for Tissue Regeneration

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...

Induced Pluripotent Stem Cells

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...

Induced Pluripotent Stem Cells

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore called induced pluripotent stem...

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Nutrient Regulation by Continuous Feeding for Large-scale Expansion of Mammalian Cells in Spheroids

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Stem cell frontiers: science, ethics and regulation.

¹The University of Sydney. j.hearn@usyd.edu.au

Journal of Law and Medicine

|October 2, 2007

Summary

Human stem cell research, spurred by breakthroughs like Dolly the sheep, shows promise but requires rigorous scientific methods and ethical considerations for therapeutic applications. Careful progress is essential to maintain public trust in regenerative medicine.

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Area of Science:

Regenerative Medicine
Developmental Biology
Bioethics

Background:

The isolation of human stem cells and cloning of Dolly the sheep sparked significant global interest.
Advances in stem cell potency and flexibility have been observed across embryonic, umbilical cord, and adult tissues.

Purpose of the Study:

To explore the scientific, ethical, and legal challenges in stem cell research and therapeutic applications.
To address the gap between the promise of stem cell therapies and the reality of scientific progress.

Main Methods:

Review of scientific literature on stem cell isolation, characterization, and therapeutic potential.
Analysis of ethical debates surrounding human embryo status and stem cell applications.
Examination of global legal and regulatory frameworks for stem cell research.

Main Results:

Stem cell science has progressed steadily, with ongoing discoveries in cell potency and flexibility.
Key research frontiers include regulating cell lineage choice and developing designer stem cells for therapeutic cloning.
Ethical debates center on the human embryo's status, while legal frameworks vary internationally.

Conclusions:

Achieving a revolutionary era in health sciences necessitates careful scientific methodology, ethical deliberation, and robust legal frameworks.
There's a risk of premature claims and dubious remedies overshadowing genuine scientific progress, potentially eroding public trust.
Responsible advancement of stem cell science is crucial to avoid misleading the public and ensure credibility.